 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
EN23F0QI Datasheet(PDF) 19 Page - Enpirion, Inc. |
|
||||||||||||||||||||||||||||||
EN23F0QI Datasheet(HTML) 19 Page - Enpirion, Inc. |
|
|
19 / 26 page  EN23F0QI ©Enpirion 2012 all rights reserved, E&OE Enpirion Confidential www.enpirion.com, Page 19 Application Information Output Voltage Programming and Loop Compensation The EN23F0QI uses a Type IV Voltage Mode compensation network. Type IV Voltage Mode control is a proprietary Enpirion control scheme that maximizes control loop bandwidth to deliver excellent load transient responses and maintain output regulation with pin point accuracy. For ease of use, most of this network has been customized and is integrated within the device package. The EN23F0QI output voltage is programmed using a simple resistor divider network (RA and RB). The feedback voltage at VFB is nominally 0.6V. RA is predetermined based on Table 5 and RB can be calculated based on Figure 10. The values recommended for COUT, CA, RCA and REA make up the external compensation of the EN23F0QI. It will vary with each PVIN and VOUT combination to optimize on performance. The EN23F0QI solution can be optimized for either smallest size or highest performance. Please see Table 5 for a list of recommended RA, CA, RCA, REA and COUT values for each solution. Figure 10: VOUT Resistor Divider & Compensation Components. See Table 5 for details. Input Capacitor Selection The EN23F0QI requires three 22µF/1206 input capacitor. Low-cost, low-ESR ceramic capacitors should be used as input capacitors for this converter. The dielectric must be X5R or X7R rated. Y5V or equivalent dielectric formulations must not be used as these lose too much capacitance with frequency, temperature and bias voltage. In some applications, lower value capacitors are needed in parallel with the larger, capacitors in order to provide high frequency decoupling. Table 3 contains a list of recommended input capacitors. Recommended Input Capacitors Description MFG P/N 22µF, 16V, X5R, 10%, 1206 Murata GRM31CR61C226ME15 22µF, 16V, X5R, 20%, 1206 Taiyo Yuden EMK316ABJ226ML-T 22µF, 25V, X5R, 10%, 1210 Murata GRM32ER61E226KE15L 22µF, 25V, X5R, 20%, 1210 Taiyo Yuden TMK325BJ226MM-T Table 3: Recommended Input Capacitors Output Capacitor Selection As seen from Table 5, the EN23F0QI has been optimized for use with three 47µF/1206 plus one 100µF/1206 for best performance. For smallest solution size, various combinations of output capacitance may be used. See Table 5 for details. Low ESR ceramic capacitors are required with X5R or X7R rated dielectric formulation. Y5V or equivalent dielectric formulations must not be used as these lose too much capacitance with frequency, temperature and bias voltage. Table 4 contains a list of recommended output capacitors. Output ripple voltage is determined by the aggregate output capacitor impedance. Capacitor impedance, denoted as Z, is comprised of capacitive reactance, effective series resistance, ESR, and effective series inductance, ESL reactance. Placing output capacitors in parallel reduces the impedance and will hence result in lower ripple voltage. n Total Z Z Z Z 1 ... 1 1 1 2 1 + + + = Recommended Output Capacitors Description MFG P/N 47µF, 6.3V, X5R, 20%, 1206 Murata GRM31CR60J476ME19L 47µF, 10V, X5R, 20%, 1206 Taiyo Yuden LMK316BJ476ML-T 22µF, 10V, X5R, 20%, 0805 Panasonic ECJ-2FB1A226M 22µF, 10V, X5R, 20%, 0805 Taiyo Yuden LMK212BJ226MG-T 100µF, 6.3V, X5R, 20%, 1206 Murata GRM31CR60J107ME39L Taiyo Yuden JMK316BJ107ML-T Table 4: Recommended Output Capacitors |
Similar Part No. - EN23F0QI |
|
Similar Description - EN23F0QI |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
